Combination wood sawing machine



July 7., 1931. J. HRNCSJAR COMBINATION WOOD SAWING MACHINE Filed Sept. 9. 1929 3 Sheets-Sheet 2 Inventor `I uly 7, 1931. .1. HRNCSJAR I A COMBINATION WOOD SAWING MACHINE` Filed sept. 9; 1929` 3 sheets-sheet 5- s rm Attorney 4 Patented July 7, 1931v UNITED STATES v COMBINATION WOOD SAWIIN'G'v MACHINE Application led September 9, 1929.' Serial No. 391,240.

This invention relates to wood sawing machines and more particularly to machines of this character having embodied therein a. plurality of rotary wood cutting elements '6 which are arranged in a novel and compact manner on a supporting frame and in relaf tion to a work table in a manner to perform cutting off and dado cutting operations on building material, such. asl window frames and sills and box frames, andit is also to be understood that the 'machine may be used for dado work on door jambs.

An important object of the invention is-to provide, a wood working machine of the aforementioned character wherein the several elements are provided with driving motors and mounted in the franie in a manner to shift or adjust the -rotary cutters toward or from the de endently adjuswl ther objects of the invention are to pro-v vide a wood working machine of` the characterr set forth which will be simple in construction, strong, durable, eiiicient i'n its use,

and which may be manufactured at lowcost.

Other objects and advantages of the invention will become apparent from'a study nate corresponding parts throughout theseveral views, and wherein:

Figure' 1 isa front elevation of a wood working machine constructed in accordance with this Iinvention.

Figure 2 is a top plan view thereof.

Figu on the line 3-3 of Figure 2. Y

Figure 4 is an elevation of .one of the strips offwood, showing several cuts formed therein by this machine.

Figure 5 is a horizontal section ofthe ver` tically adjustable supporting means for the upper supporting frame' and taken on the line '5-5- of Figure 1.

Figure 6 is a sectional view, taken on the line 6-6 of Figure 2. f Figure 7 is a vertical fragmentary sec- 1n a manner as hereinafter set forth,

work and wherein said cuttersmay be in-v of the following specification, taken in conre 3 is a cross sectional view, taken tional view taken approximately on 'line 47 7 of Figure 3. 1

Referrin to the drawings detail,the reference c aracter '1 designates generally a supporting frame having the base portion 2, 55 vertical lposts 3, and the' work S11 porting table'4 mounted on the upper en of the post 3 and extendin forwardly therefrom 1n superposed spaced relation with lespect tothe base portion 2. f 1: A power driven rotary saw 5 is journaled 1n the u'pper end of a frame 6 which is mounted for vertical adjustment between the adj acent posts 3 of the'frame throu hthe medium of the rearwardly extending ars 7, which 05 diverge from the substantially U-shaped frame 6, to the opposed sides of the adjacent lposts 3 and are joined, at their rear ends,

to the cross bar l8 havin uptu'rned end portions 9, slidably dispos in grooves 9 in said 70 posts. An electric motor 10 is mounted. on the cross bar8r and is provided with a pulley 11 vfrom which a drive belt 12 extends over a pulley 13 on Athe saw 5'for the purpose of y rotating same., At its lower end, the U- 75' shaped frame 6 is provided-with downwardly extending spaced legs '14, :for the purpose of connectin a foot actuated lever 15 thereto through t e medium of the pin and slot connections 16, as clearly shown in Figure 3. The lever 15 is journaled between the u er ends of a pair of spaced standards 17, w ich are mounted on the forward portion of the' base 2. The lever '15 constitutes means for lifti the frame 6, the saw-5,th e bars 7, the 35 cross ar 8 and the motorrlO as a unit in a.'

vertical plane, the end portions `9 sliding in the grooves 9'., f n, 1

A supporting rest 18' is provided for enf-f agement by the lever 15 for supporting the 9 orward' end of the frame when'saidvframe is in its lowered position. The cut oif saw 5 is normally below the surface of the table t and is adapted to be projected through a slot 18 insaid table, when elevated, through 95 the medium of the foot leverf1`5. The pulle 13 is journaled between the u per end's .o the U-shaped brackets 6 throug the mer dium of the horizontal Ashaft '19, which ex- `tends laterally beyond 'one of thelegsfof the 1199 frame 6, and the saw 5 is mounted on the outer end thereofyas'clearly shown in Fi re 1 of the drawings.

pair of d dado cutters are mounted for rotation inthe forward end and on opposite sides of'a supporting frame 21, and an electric motor 23 1s mounted in the rear end of said frame, the rear end of which is slidably mounted on an inclined rockable su .porting platform 22 mounted between t e adjacent posts 3. Thevmotor 23 rotates the dado cutters 20 throu h the medium of the endle belt 24 exten ing over a pulley 25 fixed on a shaft 26 on one side of the frame 21. The dado cutters 20 are mounted on the shaft 2.6 in the frame 21 and a s acing sleeve 26 is mounted on said shaft hetween said cutters. The opposite ends of the shaft extend laterally beyond the frame into an elliptical ve 27 in each of the adjacent horizonta table supports 28. A hand gripped lever 29 is mounted on the frame 21 and is grasped by an operator through an opening 30, see Figure 2, in the tabl'e top for drawing the cutters 2O upwardly through slots 31 in an arcuate sweep.

A frame similar to the one supporting the saw 5 and designated generally by the reference character A is mounted on the right side of the frame 1. The vertical portion 33 of this frame is provided with a turntable 34, upon which is rotatably mounted an electric motor 35, having a rotary cut-olf saw 36 mounted thereon. Above the saw 36, the table 4 is provided with right angularly disposed intersecting slots 37, through which the saw 36 is adapted to be selectively projected when elevated through the medium of the foot lever associated therewith, said lever and its mounting means being a duplicate of that ofthe lever 15.

Extending vertically from the rear marginal portion of the table'4, are a plurality of palrs of vertical posts 38, having dove tailed forward faces 39 thereon for slidably enga 'ng the complemental vertically adjusta le extensions 40, in which the opposite ends ofthe horizontal cross bars 40 are mounted. The upper ends of the extensions 40 are provided with forwardly extending right angularly disposed horizontal arms 41,

. the opposed faces of which pairs of arms 41 are provided with channels of the cross sectional shape indicated in Figure 6 of the drawings. The aforesaid channels are indicated b the reference character 42. A brace 43 has its opposite ends connected to the ex.

tension 40 and the arm 41.

A pair` of horizontal latforms 44 have their op osite ends exten ing into the channels 42, 1n each pair of the arms 41 and terminate at their opposite sides in downturned portions 45 for engagement with the ball earings 46'which are ositioned in the channel 42. It will thus seen that the platforms 44 are adapted to be shifted longitudinally in the channels 42 Aoft-he arms 41. A suspension frame 47 depends from each of the platforms 44-and journaled in said frames 47, adjacent their lower ends, are the transverse shafts 48, the opposite ends of which extend outwardly beyond the sides of the frames 47 and have mounted thereonpairs of cutters49 and 53.v As indicated in Figure 1 of the drawings, the frames 47 are substantially U-shaped in configuration and mounted therein on the shafts 48 are the drive pulleys 49', (see Figure 3.). Electric motors V50 are mounted on the platforms 44 and have the pulleys 51 for the purpose of driving the cutters 49 and 53 through the medium of the endless belts 52,*the lower ends `of which extend around the pulleys 49.

The construction of the two upper units is identical with the exception that the members 49 are dado cutters and the members 53 are disk saws spaced a greater distance apart than members 49.

A substantially U-shaped handle 54 is anchored to each of the frames 47 for the purpose of shifting the same forwardly and rearwardly on the arms 41. For the purpose of adjusting the upper frames and the cutters thereon vertically, a pair of vertical screw shafts 55 are rotatably mounted on horizontal supporting bars 56 of the frame and are threaded through the cross bars 40 of the Aupper frames and said shafts are provided with actuating handles or levers 57 on their upper ends. When the shafts are rotated, the frames will be shifted vertically, as will be apparent.

I have thus provided a machine which is adapted to perform practically all of the cutting operatlons necessary for use in making window frame heads and sills, as well as box frames.l

It is believed that the many advantages of a wood sawing machine constructed in accordance with this invention will be readily understood and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction may be had, which will fall within the scope of the invention as claimed. What is claimedl is:

1. A wood sawing machine of the character described comprising a work supporting table having an intermediate slot and a pair of outer slots disposed parallel with said intermediate slot on the opposite sides thereof, a. pair of spaced, rotarydado cutters mounted for movement in a horizontal plane above the table for operable engagement with the work thereon, a. pair of spaced rotary dado cutters shiftably mounted beneath the table and operable through the outer slots for engagement with the work, a rotary cut-olf saw mounted for vertical all.

movement beneath the table and operable through the intermediate slot for engagement with the work.

2. A wood sawing machine of the character described comprising a' work supporting table having an intermediate slot and a pa1r of outer slots disposed parallel with said intermediate slot on the opposite sides thereof, a pair of spaced, rotary dado cutters mounted for movement in a horizontal plane above the table for operable engagement with the work thereon, a pair of spaced rotary dado cutters shiftabl mounted beneath the table and operable through the outer slots for engagement with the work, a rotary cuto saw mounted for vertical movement beneath the table and operable through the intermediate slot for engagement with the work, means operatively connected with the cut-ofi` saw for manually shifting same vertically and guide means operatively connected with the second named pair of dado cutters whereb same move substantially in an arcuate pat through their res ctve slots.

3. A wood sawing mac ine ofthe characterfdescribed com rising a work supporting table having an intermediate slot therein and a pair of outer slots disposed in spaced,

- structure in a vertical plane, a pair o parallel relation with the intermediate slots on the opposite sides thereof, a supporting structure disposed above the table, a air of spaced rotary dado cutters suspende from t e supporting structure for movement in a horizontal plane thereon and adapted for o erable engagement with the work on tige the supporting rotary spaced dado cutters shiftabl mounted beneath the table and operab e through the outer slots for engagement with the Work on the table, guide means operatively connected with the second named dado cutters whereby same move substantially in an arcuate pat through their respective slots, a rotary cut-off saw mountedfor vertical shifting movement beneath the table and operable through the intermediate slot for engagement with the work, means for manually shifting the cut-off saw in a vertical plane.

4. A wood sawing machine of the character described comprising a work supporting table having an intermediate slot therein and a pair of outer slots disposed in spaced, parallel relation with the internwdiate slots on the opposite sides thereof, a supporting table, means for adjusting striu-,ture disposed'almve the table, a' pair of structure in a vertica ,spaced rotary dado cutters suspended from the supporting structure for movement in a horizontal plane thereon and adapted for operable engagement with the work on the table, means for adfusting the sup orting l plane, a pair o? rotary spaced dado cutters shiftably mounted beneath the table and operable through the outer slots for engagement with the work on the table, guide means operatively connected with the second nameddado cutters whereby same move substantially in an arcuate path through their respective slots, a rotary cutol saw mounted for vertical shifting movement beneath the table and operable through operatively connected with the cut-off sawv and shiftably vertically in unison therewith.

5. A wood sawing machine of the character described comprising a work supporting table having intersecting slots therein disposed substantially at right angles to each other, a pair of spaced, parallel rotary cnt ters mounted for shifting movement in a horizontal plane above the table for operative engagement with the work thereon, and a rotary cutter mounted for vertical movement beneath the table and selectively operable through the slots for engagement with the work. y e

6. A wood sawing machine comprising ak Work supporting table having a pair of slots therein d1sposed at an angle rela-tive to each other, a supporting structure above the table, a pair of spaced, rotary cutters suspended from the supporting structure for movement in a horizontal plane and operativelyy engageable with the work'on the table, a turntable. a rotary cutter supported by theti'urntable and arranged for vertical shifting movement therewith, said cutter 'being selectively operable through the slots for engagement with the Work on the table, and meansfor shifting the turntable vertically. v

In testimony whereof I affix my signature.

' JOSEPH HRNCSJAR. 

